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Symptom Matrix Chart
NGEC0041
SYSTEM — ENGINE CONTROL SYSTEM
NGEC0041S01
SYMPTOM
Reference
page
HARD/NO START/RESTART (EXCP. HA)
ENGINE STALL
HESITATION/SURGING/FLAT SPOT
SPARK KNOCK/DETONATION
LACK OF POWER/POOR ACCELERATION
HIGH IDLE/LOW IDLE
ROUGH IDLE/HUNTING
IDLING VIBRATION
SLOW/NO RETURN TO IDLE
OVERHEATS/WATER TEMPERATURE HIGH
EXCESSIVE FUEL CONSUMPTION
EXCESSIVE OIL CONSUMPTION
BATTERY DEAD (UNDER CHARGE)
Warranty symptom code AA AB AC AD AE AF AG AH AJ AK AL AM HA
Fuel Fuel pump circuit 1 1 2 3 2 2 2 3 2 EC-576
Fuel pressure regulator sys-
tem
334444444 4 EC-52
Injector circuit 1 1 2 3 2 2 2 2 EC-568
Evaporative emission system 3 3 4 4 44444 4 EC-34
Air Positive crankcase ventilation
system
334444444 41 EC-49
Incorrect idle speed adjust-
ment
33 1111 1 EC-53
IACV-AAC valve circuit 1 1 2 3 32222 2 2EC-427
IACV-FICD solenoid valve
circuit
223333333 3 EC-589
Ignition Incorrect ignition timing
adjustment
3 3 1 1 1 1 1 1 EC-53
Ignition circuit 1 1 2 2 2 2 2 2 EC-559
EGR EGRC-solenoid valve circuit 2 2 3 3 3 EC-452
EGR system 2 1 2 3 33223 3
EC-327,
339, 465
Main power supply and ground circuit 2 2 3 3 3 3 3 2 3 2 EC-143
Air conditioner circuit 2 2 3 3 33333 3 2HA-11
1 - 6: The numbers refer to the order of inspection.
(continued on next page)
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
KA24DE
Symptom Matrix Chart
EC-120
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